RE: [Xen-devel] Building unmodified_drivers fails in unstable x64XEN

["Nowatzki, Thomas L" <Thomas.Nowatzki@xxxxxxxxxx>]

Ian,

Thanks.  That was basically the issue.  

I renamed the /usr/src/linux/include/xen subdirectory and I was able to
then compile the unmodified drivers.  (The filename of the PCI .ko file
was different than the one identified in the README file.)  I assumed
the README was a bit out of date.  

I then copied the four files over to my Linux VM. And did an insmod on
the four .ko files.  They installed seemingly OK.  But when I did my I/O
test I got no performance difference whatsoever.  Did I miss something
or are my expectations incorrect.

Tom



-----Original Message-----
From: Ian Campbell [mailto:Ian.Campbell@xxxxxxxxxxxxx] 
Sent: Monday, November 13, 2006 9:10 AM
To: Nowatzki, Thomas L
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-devel] Building unmodified_drivers fails in unstable
x64XEN

On Thu, 2006-11-09 at 08:03 -0600, Nowatzki, Thomas L wrote:
> Per the instructions in the README I am trying to build the
> paravirtualized drivers from unmodified_drivers.  However, it doesn't
> seem to work in the latest unstable XEN version.  I am running SLES10
> x64 version.  Quite possibly I am doing the build incorrectly although
> it seems quite straight forward:

> include/xen/interface/xen-compat.h:23:2: error: #error "These header
> files do not support the requested interface version."

I think the problem is that the SLES10 kernel already includes Xen
headers (the 3.0.2 version I guess) which are getting mixed up with the
headers supplied in the unmodified drivers tree. The drivers want to
build against their own versions.

Can you run the build with V=1 to check that this is what is happening,
i.e. I expect -I/usr/src/foo is before -Iunmodified/.../include

Can you also have a look
in /usr/src/linux/include/xen/interface/xen-compat.h to see what
__XEN_LATEST_INTERFACE_VERSION__ is.

I'm not sure what the best solution is, as a work around you could try
renaming the include/xen subtree of the kernel source in /usr/src/linux
out of the way.

Ian.


_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel